Peter Sutcliffe, convicted in 1981 of murder of 13 women, asks high court to set tariff which could lead to parole.

The serial killer Peter Sutcliffe is seeking a high court ruling to determine how much longer he must serve in jail. Sutcliffe, known as the Yorkshire Ripper, got 20 life terms in 1981 for murdering 13 women and attacking seven others.

The 63-year-old is now asking the court to grant him a finite sentence.

Sutcliffe, who is held in Broadmoor high security psychiatric hospital, will have to persuade the mental health review tribunal that he no longer poises a risk before he can be eligible to apply for parole.